Medulla-oblongata sentence example

medulla-oblongata
  • Forwards it covers, and has driven asunder, the optic lobes; backwards it hides the much shortened medulla oblongata.
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  • The action of aconitine on the circulation is due to an initial stimulation of the cardio-inhibitory centre in the medulla oblongata (at the root of the vagus nerves), and later to a directly toxic influence on the nerve-ganglia and muscular fibres of the heart itself.
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  • Consciousness is entirely unaffected by physostigmine, there being apparently no action on any part of the brain above the medulla oblongata.
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  • The cerebral convolutions remain unaffected, but the important centres of the medulla oblongata are stimulated.
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  • As the vaso-motor centre in the medulla oblongata is also stimulated, as well as the contractions of the heart, there is thus trebly caused a very great rise in the blood-pressure.
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  • In small therapeutic and in small toxic doses atropine stimulates the motor apparatus of the spinal cord, just as it stimulates the centres in the medulla oblongata.
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  • The action on the circulation is largely secondary, however, to the all-important action of opium on the respiratory centre in the medulla oblongata.
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  • Similarly the depressant action on the respiratory centre in the medulla oblongata occurs only after the administration of enormous doses.
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  • This is mainly due to a direct action on the muscular coats of the vessels, but is also partly of central origin, since the drug also stimulates the vasomotor centre in the medulla oblongata.
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  • Morphine exercises its effects chiefly upon the cerebrum and the medulla oblongata in man.
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